The example of a mapping/grouping game in the LGB is from PT40, IIRC. I think they are making the point that any "mapping game" in recent years can be approached with the methods that PS offers for grouping.

No true mapping games at least back to the PT30's in my experience.

If you're at all pressed for time, skip the whole chapter. It might be worth doing a few "pattern" games from the chapter because in a way, they are just linear games. I would also try the "astronauts" game that PS calls a "profile charting" game.